Dipper or bucket for excavating machines



Jilly 12, 1932. SUMMERS 1,867,479

DIPPER OR BUCKET FOR EXCAVATING MACHINES Filed June 14, 1930 3 Sheets-Sheet 1 July 12, 1932. J. N. SUMMERS DIPPER OR BUCKET FOR EXCAVATING MACHINES Filed June 14, 1930 3 Sheets-Sheet 2 July 12, 1932. J. N. SUMMERS DIPPER OR BUCKET FOR EXCAVATING MA GHINES Filed June 14, 1930 5 Sheets-Sheet 5 Patented July 12, 1932 PATENT OFFICE J OE SUMMERS, OF MISSION, TEXAS DEEPER on BUCKET r03 Application filed June 14,

" This invention relates to excavating machines, and more particularly to an improved dipper or bucket for excavating machines of that type embodying a boom, a dipper handle carried by the boom and at least two hoisting drums.

The invention has for one of its objects to provide a dipper or bucket which shall be of such construction and adapted to be so connected to the dipper handle as to permit it to be operated as a reversed dipper or as a pull shovel or as a drag scraper'bucket, to the end that the machine may be used-for excavating canals, trenches and burrow pits, for building levees, and for other excavating Work in general.

The invention has for a further object to provide a dipper or bucket of the character stated which shall be adapted to be connected to the dipper handle and operated in such manner as to obviate the necessity of the use of a drop bottom therefor, to the end that the objections incident to the use of such bottomsand their latches and springs shall be avoided.

excavating machine equipped with a dipper or bucket constructed in accordance with my invention, the dipper or bucket being shown by solid linesin load receiving position and by dotted lines in load sustaining position;

Figure 2 is a view in side elevation of the 7 machine with the dipperor bucket shown by solld lines 1n load sustaining position and by dotted lines in load discharging position;

Figure 3 is a view in rear elevation of the machine, and

Figure 4 is a sectional view taken on tical plane extending longitudinally and centrally through the dipper or bucket and the lower end of the dipper handle of the. machine.

Referring in detail to the drawings, 1 des- EXCAVATING mnonnvns 1930. Serial No. 4 1,172.

ignates the front part of an excavating machine of the type referred to. 2 designates the boom and 3 the dipper handle of the machine. The boom 2 is pivotally mounted in the usual manner, as at 4, and is provided at its upper or free end with a shaft 5 upon which are mounted sheaves 6 and 7. The boom 2 is adapted to be raised and lowered through the medium of the usual cables 8 which pass about the sheaves 6 and are connected to a winding drum, not shown. Thedipper handle 3 is connected in the usual. manner to thevboom 2 for rocking and sliding movement with respect thereto, and has secured to the lower end thereof my improved dipper or bucket 9. The means forconnecting the dipper handle 3 to the boom 2 are not shown since the construction of such means is well understood.

The dipper or bucket 9 embodies top, bottom, rear and side walls that are fixedly connected together, and it is fully open at its front or filling side. The dipper 9 is provided with a bottom cutting lip 10 and side cutting lips 11, and carried by the lips and extending forwardly beyond the same are teeth 12. The bucket 9 is pivotally connected at its upper front corner, as at 13, to the lower end of bracket plates 14 that are secured, as at 15, to the lower end of the dipper handle 3. V

A block 16 is secured to and between the bracket plates 14, and it extends forwardly and rearwardly beyond thebracket plates. The block16 has its rear side inclining upwardly and rearwardly fromthe lower end of the handle 3, as-clearly shown at 16a in Figure 4. A guide sheave 17 and a control. sheave 18 are journaled in the block 16. The journal 19 of the sheave 17 is located forwardly and upwardly beyond the pivot 13 of the dipper or bucket 9, and the journal 20 of the sheave 18 is located above the pivot.

A loading line 21 extending from a drum, not shown, passes under the sheave 17 and over the sheave 18 and is anchored, as at 22, to the upper rear corner of the dipper or bucket 9. I

A block 23 is secured to the top wall of the I dipper or bucket 9 and is provided with a downwardly and upwardly inclined top side 23a and an upwardly and rearwardly inclined front side 23?). The top side 23a of the block 23 extends downwardly from the top side of the sheave 18 to the loading line anchor 22, and constitutes 'a guide and rest for that portion of the loading line that is located between the sheave and anchor. The front side 23?) of the block 23 constitutes a stop which contacts with the inclined rear side 16a of the sheave block 16 to. limit the upward and rearward swinging movement of the dipper or bucket 9 with respect tothe dipper handle 3. When the stop 23b is incontact with the sheave block 16, the dipper or bucket 9 is in loading positionv with its loading side occupying a plane substantially. coincident with the longitudinal axis of the dipper handle 3. g The dipper or bucket 9 is adapted to be moved forwardly, to effectv the loading thereof, through the medium of the line 21. While it is beingrwound upon its drum, the loading line 21 exerts an upward and rearward pull upon the dipper or bucket 9, with the result that the stop 23?) will be firmly held in contact with the sheave block 16 and the dipper or bucket positively held against any swinging movement during the loading thereof.

A hoisting line 24 extending from av drum, not shown, passes about the sheave 7 and is secured, as at 25, to the rear end of the sheave block 16. This line provides means through the medium of which the dipper handle 3 may be operated to raise the dipper or bucket 9 into its dumping position. The loading position of the dipper or bucket 9 is shown at A in Figure 1 and its load dumping position is shown at B in Figure 2. After the dipper or bucket 9 is loaded, the loading line 21 is slacked off to permit the dipper or bucket to gravitate to its load sustaining position during the first phase of its movement from loading to dumping position, the load sustaining position of the bucket bein shown at C in Figure 1.

The manner in which a machine equipped with the dipper or bucket is adapted to be used for the purpose of excavating a ditch is illustrated in Figures 1 and 2. During the loading thereof, the dipper or bucket 9 is moved forwardly and upwardly through the medium of the loading cable 21. After the dipper or bucket has been loaded, the loading line 21 is slacked 01f and the hoisting line 24; is reeled on its drum to permit the dipper or bucket to gravitate to its load sustaining position and to be raised while occupying this position into a position above the trench. After the dipper or bucket 9 has been raised to this position, the loading line 21 is reeled upon its drum to swing the dipper or bucket into its dumping position. The dipper or bucket 9 will be maintained by gravity in its load sustaining position while it is being elevated, and when it is in this position, its open side occupies a clownwardly and forwardly inclined position with respect to the longitudinal axis of the dipper handle 3.

When the dipper or bucket 9 is in its dumping position, its open side is lowermost and occupies a plane substantially coincident with the longitudinal axis of the dipper handle 3. After the dipper or bucket 9 has been dumped'the hoisting line 24: is slacked oil and the loading line 21 is reeled on its drum to swing the dipper or bucket downwardly and then forwardly and upwardly to efi'ect theloading'thereof. The dumping position of the bucket with respect to the longitudi 'nal axis of the dipper handle 3v is similar to the loading position of the bucket with such changes may be made, when desired, as-

fall within the scope of the invention as claimed. 7

I claim In an excavating machine, a boom provided at its upper end with a sheave, a dipper handle, bracket plates secured to and extending solely in a downward direction from the lower end of the dipper handle, a dipper or bucket pivoted at its upper front corner to the lower ends of the bracket plates, a block secured to and between the bracket plates above the pivot of the dipper or bucket, the block extending'for a short distance rearwardly beyond the bracket plates and for a considerably greater distance forwardly be-' yond the bracket plates, the rear end of the block inclining upwardly and rearwardly from the lower ends of the bracket plates and the forwardly extendingportion of the block being inclined downwardly, a guide sheave journaled in the lower end of the forwardly projecting portion of the block, a control sheave journaled in the block between the bracket plates, a loading line passing under the guide sheave and over the control sheave and anchored to the upper rear corner of the dipper or bucket, a block secured to the upper side of the dipper or bucket and having an upwardly and rearwardly inclined front side adapted to contact with the inclined rear side of said first block to limit the movement of the dipper or bucket by the loading line, the upper side of said second block inclining downwardly and rearwardly from the upper edge of the control sheave to the upper rear corner of the dipper or bucket to provide a guide and rest for that portion of the loading line extending from the control sheave to such corner of the dipper or bucket, and a hoisting line passing over the sheave on the boom and secured to the rear end of said first block.

In testimony whereof I hereunto afiix my signature.

JOE N. SUMIIERS. 

